What was found
AIRCRAFT FLEW TO ALTITUDE AND AILERON TRIM CONTROL BECAME STIFF. UPON RETURN THE TRIM JACK WAS LUBED AS PER MM. SUSPECT MOISTURE OR WATER FREEZING AT ALTITUDE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT FLEW TO ALTITUDE AND AILERON TRIM CONTROL BECAME STIFF. UPON RETURN THE TRIM JACK WAS LUBED AS PER MM. SUSPECT MOISTURE OR WATER FREEZING AT ALTITUDE.